| 摘要 |
1529206 Curing diene/nitrile copolymers B F GOODRICH CO 22 Dec 1975 [26 Dec 1974] 52435/75 Heading C3P Diene/nitrile copolymers containing 0À2-5 wt. per cent of halogen are cured by heating with (i) 1-7 wt. per cent of zinc oxide, and (ii) 0À1-5 wt. per cent of a thiourea compound, based on the copolymer, In examples, butadiene/acrylonitrile/vinyl benzyl chloride copolymers are cured with zinc oxide and ethylene thiourea, trimethyl thiourea or tetramethyl thiourea. |
